Design and testing of AR coatings for MEGARA optics
We present the antireflection coatings of the optical elements of MEGARA, the new integral field and multi-object spectrograph for the Gran Telescopio Canarias. We describe the methodology for optimizing the solutions. We also present the results of the final deposited coatings. The main optics requ...
| Authors: | ; |
|---|---|
| Format: | Article |
| Publication date: | 2016 |
| Country: | España |
| Institution: | Universidad Complutense de Madrid (UCM) |
| Repository: | Docta Complutense |
| Language: | English |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/23226 |
| Online Access: | https://hdl.handle.net/20.500.14352/23226 |
| Access Level: | Open access |
| Keyword: | 52 Antireflection coatings Optical design Thin films Optical testing Broadband coatings MEGARA GTC Astrofísica Astronomía (Física) |
| _version_ | 1878738301772365824 |
|---|---|
| author | Gil De Paz, Armando |
| author2 | Gallego Maestro, Jesús |
| author2_role | author |
| author_browse | Gallego Maestro, Jesús Gil De Paz, Armando |
| author_facet | Gil De Paz, Armando Gallego Maestro, Jesús |
| author_role | author |
| collection | Docta Complutense |
| description | We present the antireflection coatings of the optical elements of MEGARA, the new integral field and multi-object spectrograph for the Gran Telescopio Canarias. We describe the methodology for optimizing the solutions. We also present the results of the final deposited coatings. The main optics require broadband coatings in the range from 370 nm to 980 nm for different materials with a mean R<1.3% at specific angles of incidence in each surface. For each material a specific arrangement of thicknesses of the same eight layers were produced and tested. For the spectrograph pupil elements four layer coatings were designed and produced R<0.3%. The design of main optics and pupil elements coatings have been shared between INAOE and CIO. The coating depositions have been performed at CIO in the Integrity 39 Denton Vacuum Deposition System. The main optics final coatings fulfill MEGARA requirements. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_accaa472b3e8d331c95c102e7b8aace4 |
| institution | Universidad Complutense de Madrid (UCM) |
| instname_str | Universidad Complutense de Madrid (UCM) |
| language | eng |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:docta.ucm.es:20.500.14352/23226 |
| publishDate | 2016 |
| publishDateSort | 2016 |
| publisher | SPIE-Int Soc Optical Engineering |
| publisherStr | SPIE-Int Soc Optical Engineering |
| reponame_str | Docta Complutense |
| spelling | Design and testing of AR coatings for MEGARA optics Gil De Paz, Armando Gallego Maestro, Jesús 52 Antireflection coatings Optical design Thin films Optical testing Broadband coatings MEGARA GTC Astrofísica Astronomía (Física) We present the antireflection coatings of the optical elements of MEGARA, the new integral field and multi-object spectrograph for the Gran Telescopio Canarias. We describe the methodology for optimizing the solutions. We also present the results of the final deposited coatings. The main optics require broadband coatings in the range from 370 nm to 980 nm for different materials with a mean R<1.3% at specific angles of incidence in each surface. For each material a specific arrangement of thicknesses of the same eight layers were produced and tested. For the spectrograph pupil elements four layer coatings were designed and produced R<0.3%. The design of main optics and pupil elements coatings have been shared between INAOE and CIO. The coating depositions have been performed at CIO in the Integrity 39 Denton Vacuum Deposition System. The main optics final coatings fulfill MEGARA requirements. SPIE-Int Soc Optical Engineering https://hdl.handle.net/20.500.14352/23226 |
| spellingShingle | Design and testing of AR coatings for MEGARA optics Gil De Paz, Armando 52 Antireflection coatings Optical design Thin films Optical testing Broadband coatings MEGARA GTC Astrofísica Astronomía (Física) |
| title | Design and testing of AR coatings for MEGARA optics |
| title_full | Design and testing of AR coatings for MEGARA optics |
| title_fullStr | Design and testing of AR coatings for MEGARA optics |
| title_full_unstemmed | Design and testing of AR coatings for MEGARA optics |
| title_short | Design and testing of AR coatings for MEGARA optics |
| title_sort | Design and testing of AR coatings for MEGARA optics |
| topic | 52 Antireflection coatings Optical design Thin films Optical testing Broadband coatings MEGARA GTC Astrofísica Astronomía (Física) |
| topic_facet | 52 Antireflection coatings Optical design Thin films Optical testing Broadband coatings MEGARA GTC Astrofísica Astronomía (Física) |
| url | https://hdl.handle.net/20.500.14352/23226 |